loki/cmd/docker-driver/docker-compose.yaml

version: "3"
services:
  nginx:
    image: grafana/grafana
    logging:
      driver: loki
      options:
        loki-url: http://host.docker.internal:3100/loki/api/v1/push
        loki-pipeline-stages: |
          - regex:
              expression: '(level|lvl|severity)=(?P<level>\w+)'
          - labels:
              level:          
    ports:
      - "3000:3000"